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It also has no Iroha API inside, but it can be added if needed.

Decisions

• Use protobuf schema for Commands and Queries payloadspayloads  Use some schema for Commands and Queries descriptions
• Commands and Queries implementation should align to appropriate interfaces (rollback_block, load_persistent, etc.) in available SKDs?
• Executor makes a decision to proceed with command/query or not

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• No strict requirements to environment is powerful yet dangerous solution
• Solution did not align well with Iroha 2.0 in it's current form

Assumptions

• Clients and Iroha use gRPC or another protocol with Protobuf 
• Custom commands and queries has no obvious API for Iroha

Risks

• Protobuf will not be enough for 3rd party applications and users `[9;7]`
• Powerful environments will require a lot of resources `[9;5]`

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